File content as of revision 6:80f554fd77a0:

/** Library for Holtek HT1632 LED driver chip,
 * As implemented on the Sure Electronics DE-DP10X display board
 * 8 x 32 dot matrix LED module.)
 *
 * Original code by:
 * Nov, 2008 by Bill Westfield ("WestfW")
 *   Copyrighted and distributed under the terms of the Berkely license
 *   (copy freely, but include this notice of original author.)
 *
 * Adapted for 8x32 display by FlorinC.
 *
 * Arduino Library Created and updated by Andrew Lindsay October/November 2009
 *
 * Ported to Mbed platform by Andrew Lindsay, November 2012
 *
 * @author Andrew Lindsay
 *
 * @section LICENSE
 *
 * Copyright (c) 2012 Andrew Lindsay (andrew [at] thiseldo [dot] co [dot] uk)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * 
 * @section DESCRIPTION
 *  Definitions for Holtek HT1632 LED driver
 * 
 */

#ifndef _HT1632_LEDMATRIX_H
#define _HT1632_LEDMATRIX_H

// To include the graphic functions use the following. Comment out to exclude them 
#define USE_GRAPHIC

#include <inttypes.h>

/*
 * commands written to the chip consist of a 3 bit "ID", followed by
 * either 9 bits of "Command code" or 7 bits of address + 4 bits of data.
 */
#define HT1632_ID_CMD 4     /* ID = 100 - Commands */
#define HT1632_ID_RD  6     /* ID = 110 - Read RAM */
#define HT1632_ID_WR  5     /* ID = 101 - Write RAM */

#define HT1632_CMD_SYSDIS 0x00  /* CMD= 0000-0000-x Turn off oscil */
#define HT1632_CMD_SYSON  0x01  /* CMD= 0000-0001-x Enable system oscil */
#define HT1632_CMD_LEDOFF 0x02  /* CMD= 0000-0010-x LED duty cycle gen off */
#define HT1632_CMD_LEDON  0x03  /* CMD= 0000-0011-x LEDs ON */
#define HT1632_CMD_BLOFF  0x08  /* CMD= 0000-1000-x Blink ON */
#define HT1632_CMD_BLON   0x09  /* CMD= 0000-1001-x Blink Off */
#define HT1632_CMD_SLVMD  0x10  /* CMD= 0001-00xx-x Slave Mode */
#define HT1632_CMD_MSTMD  0x14  /* CMD= 0001-01xx-x Master Mode */
#define HT1632_CMD_RCCLK  0x18  /* CMD= 0001-10xx-x Use on-chip clock */
#define HT1632_CMD_EXTCLK 0x1C  /* CMD= 0001-11xx-x Use external clock */
#define HT1632_CMD_COMS00 0x20  /* CMD= 0010-ABxx-x commons options */
#define HT1632_CMD_COMS01 0x24  /* CMD= 0010-ABxx-x commons options */
#define HT1632_CMD_COMS10 0x28  /* CMD= 0010-ABxx-x commons options */
#define HT1632_CMD_COMS11 0x2C  /* CMD= 0010-ABxx-x commons options */
#define HT1632_CMD_PWM    0xA0  /* CMD= 101x-PPPP-x PWM duty cycle */

#define PIXEL_OFF 0
#define PIXEL_ON  1

/** class HT1632_LedMatrix
*/
class HT1632_LedMatrix  //: public Print
{
private:
    /** Select a specific display
     *
     * @param chip number
     */
    void chipselect( uint8_t );
    void chipfree( uint8_t );
    void writebits( uint8_t, uint8_t );
    void writedatabits( uint8_t, uint8_t );
    void sendcmd( uint8_t, uint8_t );
    void senddata( uint8_t, uint8_t, uint8_t );
    void sendcol( uint8_t, uint8_t, uint8_t );

public:
    /** Default Constructor
     */
    HT1632_LedMatrix( );

    // Init/Clear/position functions
    void init( uint8_t, uint8_t );
    void displayOff( void ) ;
    void displayOn( void ) ;
    void clear(void);
    void setBrightness( unsigned char );
    uint8_t putChar( int, int, char );
    void write( uint8_t );
    void putString( int, int, char* );
    void plot( int, int, char );
    void gotoXY(int , int);
    void getXY(int* , int*);
    void getXYMax(int*, int*);
    void shiftCursorX(int );
    void setCustomChar( int, unsigned char[]);
    void setCustomChar( int, unsigned char[], uint8_t );
    void scrollLeft(uint8_t, uint8_t);
    void putShadowRam();
    void putShadowRam(uint8_t);
    // Graphic functions
#ifdef  USE_GRAPHIC
    void drawLine(unsigned char x1, unsigned char y1,
                  unsigned char x2, unsigned char y2, unsigned char c);
    void drawRectangle(unsigned char x1, unsigned char y1,
                       unsigned char x2, unsigned char y2, unsigned char c);
    void drawFilledRectangle(unsigned char x1, unsigned char y1,
                             unsigned char x2, unsigned char y2, unsigned char c);
    void drawCircle(unsigned char xc, unsigned char yc,
                    unsigned char r, unsigned char c);
#endif

};

#endif //_HT1632_LEDMATRIX_H